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Ecotoxicological information

Toxicity to soil macroorganisms except arthropods

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Key value for chemical safety assessment

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A guideline study on Eisenia fetida following OECD guideline 207 is available. The animals were placed on artificial soil mixed with the test substance. The exposure period was 14 days. At test termination the mortality of the test animals were recorded and a LC50 > 1000 mg/kg soil dw (LC0 > 1000 mg/kg soil dw) was determined (Ciba-Geigy Ltd., 1987).

Furthermore, a guideline study on Eisenia fetida following OECD guideline 222 (Effects on reproduction and growth of earthworms Eisenia fetida in artificial soil) is available. The overall exposure period was 8 weeks. Mortality and growth effects on the adult worms were determined after 4 weeks of exposure. The adults were then removed from the soil and effects on reproduction assessed after a further 4 weeks. The corresponding NOEC were 1000 mg/kg soil dw for mortality and 100 mg/kg soil dw for reproduction (Ciba Inc. 2009).